CATALOG 950 | AUGUST 2012 WWW.TCF.COM

INDUSTRIAL PROCESS AND

COMMERCIAL VENTILATION SYSTEMS

Twin City Fan

Twin City FanRADIAL TIP FANSMODEL RTF

TWIN CITY FAN - CATALOG 9502

Model RTF radial tip fans are of a heavy duty, rugged design, suitable for applications involving large volumes of gas streams at moderate to high pressure. Designed to handle clean or dirty airstreams, they are widely used to exhaust gases from bag-type collectors, precipita-tors, scrubbers, cyclones, and other industrial applica-tions. This type of fan is also used for induced draft on boilers, incinerators, and kiln exhaust. Steel, air pol-lution, dryer, petrochemical, cement, furnaces and ov-ens, solvent recovery, sewage sludge and solid waste incineration industries have found the Model RTF radi-al tip design particularly suitable for their applications.

Capabilities• Heavy-duty construction with choice of speed range:

Class 18 — Suitable to 18,000 FPM tip speedPressures to 24" w.g.

Class 23 — Suitable to 23,000 FPM tip speedPressures to 36" w.g.

Class 23 wheels are equipped with wear pads on the blades. Consult factory for higher tip speed designs.

• Volume to 223,800 CFM.• Standard fan suitable to 300°F.

Features• High efficiency, lower first and operating costs.• AMCA licensed air performance on sizes 270 through 800, pages 8 to 12.• Self-cleaning wheel design.• Statically and dynamically balanced rotor assembly.• Heavy duty, self-aligning, grease lubricated, anti- friction, pillow block bearings.• Heavy-gauge reinforced housing and bearings pedestal for vibration-free service.

Twin City Fan & Blower certifies that the RTF Radial Tip Fans Sizes 270 through 800 shown on pages 8 to 12 are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Typical Performance Curve with Various Diameter Fan Wheels

Size: 600 RPM: 1175 Density: 0.075 lb/ft3

100 98 96 94 92

100 98

96

94 92

SP @ % DIA. =

BHP @ % DIA. =

48

40

32

24

16

8

00 2 4 6 8 10 12 14 16

CFM (10,000's)

STA

TIC P

RESSURE (IN. OF

WATE

R)

1000

800

600

400

200

BRAKE H

ORSEPOWER

Model RTF

Model RTFArr. 1

Twin City Fan

Twin City Fan

RADIAL TIP FANS

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Inlet BoxesIntegral or detached type, generously designed to minimize pressure drop. Specify inlet box position to AMCA Standard 2405-66 shown on page 4. Detached inlet boxes include support legs and flanges on both inlet and outlet. Free-standing designs are also avail-able to allow a flex connector between box and fan. Standard detached inlet box will not support stack weight. All inlet box designs include drain and access door.

Inlet Box DampersPre-spin design, heavy duty construction. The damper will spin the air in the direction of wheel rotation resulting in a savings in horsepower at reduced loads.

Outlet DampersDouble surface airfoil blades are available in either parallel or opposed blade design.

Abrasion and Corrosion Resistant Alloys and CoatingsOptional construction includes an abrasion resistant steel blade, backplate, scroll and side or cheek lin-ers. Construction materials include Corten, stainless steel, Monel, aluminum, Hastelloy, and other alloys. Construction from heavier than standard gauges is available. Special corrosion resistant coatings of vari-ous types are available.

Temperature and Vibration DetectorsThermocouples or RTDs can be installed on the bear-ings. Various types of vibration switches are available.

EvaséUsually fabricated by customer as a part of the ductwork. Fan outlet must be expanded to equal evasé area shown in the catalog to obtain rated per-formance. Construction is of the same gauge as fan housing when purchased from the factory.

High Temperature Construction301 to 500°F: Requires addition of shaft cooler and

high temperature grease bearings.

501 to 600°F: Above modifications plus high tem-perature aluminum paint.

601 to 800°F: Above modifications plus modified pedestal design.

Arrangement 1The usual choice for many V-belt drive applications. Wheel is overhung. Steel bearing pedestal to size 730. Size 800 requires con-crete pedestal. Consult fac-tory for V-belt drive applica-tions larger than 250 HP.

Arrangement 3SISWSI fan with integral inlet box and independent bear-ing pedestals. The wheel is supported between two bearings.

Arrangement 7SIDirect coupled with a flexible coupling. A single-width, single-inlet fan with an integral inlet box and independent bearing pedestal and bearing/motor pedestal installed on a common base. The wheel is supported between two bearings.

Arrangement 8Direct coupled with a flexible coupling. The motor pedestal can be custom fabricated out of steel for up to 300 HP. On larger HP units, use of stan-dard Arr. 1 fan with a con-crete pedestal for the motor is advisable.

Arrangement 9FFloor mount. Similar to Arrangement #1 with the fan base extended to mount motor in a hori-zontal position.

ARRANGEMENTS

OPTIONS/ACCESSORIES

TWIN CITY FAN - CATALOG 9504

Fan

CouplingMotor

InletBox

Subbase

Arrangement 7SI — Similar to Arrangement 3SI except bearings pedestals and motor installed on a steel common base.

Inlet Box

Fan

Concrete

Arrangement 3SI fan with integral inlet box, centrally supported wheel, independent bearings pedestals to be installed on concrete pedestals.

Inlet Box

Fan

Subbase

Arrangement 1 fan with attached or integral inlet box. Can be supplied in Arrangement 8.

Inlet Box

Fan

Arrangement 1 fan with detached inlet box. Can be supplied in Arrangement 8.

A B

F

D

C

ToSuitFan

Typical Inlet Box Dimensions

Dimensions are not to be used for construction.Dimensions are in inches unless otherwise noted.

270°270

225

225°

180

180°

135

135°

9090°

45

45°

360

360°

315

315°

Reference line is the Top Vertical Axis through center of fan shaft.

Position of inlet box and air entry to inlet box is determined from drive side of fan.

Position of inlet box is designated in degrees clockwise from Top Vertical Axis as shown.

Positions 135° to 225° in some cases interfere seriously with floor structure.

Inlet Box Positions for Centrifugal Fans

FANSIZE

A B C DINLET AREA (FT2)

F

180 9.75 28.75 3.19 10.00 1.85 1.5 x 1.5200 10.63 31.50 3.19 11.00 2.22 1.5 x 1.5220 11.75 35.00 3.19 12.00 2.81 1.5 x 1.5240 13.00 38.50 3.19 12.50 3.34 1.5 x 1.5270 14.38 42.50 3.19 14.00 4.10 1.5 x 1.5300 15.88 46.88 3.19 15.00 5.00 1.5 x 1.5330 17.88 52.13 3.19 16.50 6.11 2.0 x 2.0360 19.38 57.38 3.19 20.06 7.52 2.0 x 2.0400 21.38 63.38 3.19 21.88 9.20 2.5 x 2.5450 23.38 69.38 4.19 24.50 11.00 2.5 x 2.5490 25.88 76.88 4.19 26.69 13.60 2.5 x 2.5540 28.50 84.50 5.25 28.75 16.30 2.5 x 2.5600 31.50 93.50 5.25 30.88 20.00 3.0 x 3.0660 34.88 103.50 5.25 33.44 24.60 3.0 x 3.0730 38.50 114.50 6.25 37.00 30.00 3.5 x 3.5800 42.50 126.50 6.25 40.38 36.00 3.5 x 3.5

INLET BOX POSITIONS AND DESCRIPTIONS

45 — Angular Down Intake90 — Horizontal Right Intake135 — Angular Up Intake180 — Bottom Up Intake225 — Angular Up Intake270 — Horizontal Left Intake315 — Angular Down Intake360 — Top Down Intake

INLET BOXES

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¹ Minimum fan diameter when using maximum HP motor. Check with the factory on applications over 300 HP.² Maximum RPM shown are for 70°F. For higher temperatures use Table 2 on page 6 to derate RPM.³ Size 800 RTF is not supplied with conventional bearings pedestal. Instead we supply channel subbases. The

subbase is to be mounted on concrete pedestal with steel sole plate in the field. Fan weights include weight of channel subbase.

Dimensions are in inches unless otherwise noted.

Table 1. Material and Mechanical Specifications

FANSIZE

DESIGN RTF

SHAFT DIA.

MAX. HP V-BELT DRIVE

MIN. SHEAVE

DIA.1

MAX. HP DIRECT DRIVE

MAX. RPM 2

WHEEL WT. (LB)

WHEELWR2

(LB-FT2)HOUSING

ARR. 1 FAN WT.

(LB)BACK PLATE

BLADES SHROUD

18018 2.188 30 5.7 40 3342 59 0.25 10 GA. 10 GA. 21 7 GA. 74523 2.188 60 5.4 75 3971 70 0.31 10 GA. 10 GA. 22 7 GA. 760

20018 2.188 40 6.6 75 3026 71 0.25 10 GA. 10 GA. 31 7 GA. 82523 2.438 75 5.9 100 3800 84 0.31 10 GA. 10 GA. 36 7 GA. 850

22018 2.188 50 7.5 60 2723 87 0.25 10 GA. 10 GA. 46 7 GA. 87523 2.438 100 6.6 125 3484 103 0.31 10 GA. 10 GA. 55 7 GA. 930

24018 2.188 60 8.4 75 2476 105 0.25 10 GA. 10 GA. 68 7 GA. 92023 2.688 125 7.2 150 3167 125 0.31 10 GA. 10 GA. 81 7 GA. 1000

27018 2.438 75 9.5 100 2264 128 0.31 10 GA. 10 GA. 90 7 GA. 110023 2.688 150 7.9 150 2892 153 0.31 10 GA. 10 GA. 112 7 GA. 1160

30018 2.688 100 11.1 150 2052 149 0.31 10 GA. 10 GA. 131 7 GA. 130023 2.938 200 8.7 200 2622 178 0.31 10 GA. 10 GA. 164 7 GA. 1350

33018 2.688 100 11.4 150 1858 196 0.31 10 GA. 10 GA. 196 7 GA. 153023 2.938 200 9.7 250 2374 231 0.31 10 GA. 10 GA. 243 7 GA. 1580

36018 2.938 150 12.6 150 1676 248 0.31 10 GA. 10 GA. 326 7 GA. 195023 3.438 250 11.4 300 2143 270 0.31 10 GA. 10 GA. 364 0.25 2330

40018 3.438 200 12.1 200 1519 352 0.31 10 GA. 7 GA. 532 7 GA. 245023 3.938 250 13.5 400 1942 405 0.38 10 GA. 7 GA. 639 0.25 2870

45018 3.438 200 14.7 250 1375 408 0.31 10 GA. 7 GA. 781 7 GA. 298023 3.938 250 11.5 500 1757 510 0.38 10 GA. 7 GA. 1042 0.25 3540

49018 3.938 250 14.2 300 1247 537 0.38 7 GA. 7 GA. 1343 7 GA. 379023 4.438 400 14.1 600 1573 667 0.50 7 GA. 7 GA. 1741 0.25 4370

54018 3.938 250 17.2 400 1127 756 0.38 7 GA. 0.25 2140 7 GA. 466023 4.438 400 17.4 700 1440 890 0.50 7 GA. 0.25 2694 0.25 5480

60018 4.438 300 17.7 400 1019 1041 0.50 0.25 0.25 3942 0.25 636023 4.938 400 15.6 800 1302 1108 0.50 0.25 0.25 4276 0.25 6520

66018 4.438 300 21.0 500 926 1222 0.50 0.25 0.25 5717 0.25 728023 4.938 400 18.6 1000 1183 1522 0.63 0.25 0.25 7333 0.25 7710

73018 4.438 300 24.6 600 838 1484 0.50 0.25 0.25 8483 0.25 884023 4.938 400 21.6 1200 1071 1847 0.63 0.25 0.25 11020 0.25 9350

8003 18 4.938 400 25.7 700 758 1769 0.50 0.25 0.25 12645 0.25 866023 5.438 400 19.6 1400 968 2216 0.63 0.25 0.25 16426 0.25 9370

Twin City Fan

Twin City Fan

ENGINEERING DATA

TWIN CITY FAN - CATALOG 9506

Performance Correction for Temperature and AltitudeThe performance tables in this catalog are based on fans handling standard air at a density of 0.075 pounds per cubic foot. This is equivalent to 70°F at sea level (29.92 Hg barometric pressure). When specified perfor-mance is at a density different than standard, it must be converted to the equivalent standard conditions before entering the performance tables. The equivalent conditions can be calculated by using the “Temperature and Altitude Density Ratios” table below.

Table 3. Temperature and Altitude Density Ratios

Derating Factors For High TemperatureWhen elevated temperatures are encountered, the maximum RPM allowable as shown in Table 1 on page 5 must be derated according to the derating factors from Table 2. Standard steel construction is suitable for use in gas temperatures to 800°F. Aluminum wheels are suitable for temperatures to 250°F only.

Table 2. Temperature Derating Factors

TEMP.(°F)

DERATING FACTOR

STANDARD STEEL

STAINLESS STEEL

70 1.000 1.000200 0.990 0.950300 0.975 0.916400 0.955 0.877500 0.930 0.841600 0.904 0.809700 0.880 0.777800 0.837 0.754

AIRTEMP

°F

ALTITUDE IN FEET ABOVE SEA LEVEL0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 15000 20000

BAROMETRIC PRESSURE IN INCHES OF MERCURY29.92 28.86 27.82 26.82 25.84 24.90 23.98 23.09 22.22 21.39 20.58 16.89 13.75

70 1.000 0.964 0.930 0.896 0.864 0.832 0.801 0.772 0.743 0.714 0.688 0.564 0.460100 0.946 0.912 0.880 0.848 0.818 0.787 0.758 0.730 0.703 0.676 0.651 0.534 0.435150 0.869 0.838 0.808 0.770 0.751 0.723 0.696 0.671 0.646 0.620 0.598 0.490 0.400200 0.803 0.774 0.747 0.720 0.694 0.668 0.643 0.620 0.596 0.573 0.552 0.453 0.360250 0.747 0.720 0.694 0.669 0.645 0.622 0.598 0.576 0.555 0.533 0.514 0.421 0.344300 0.697 0.672 0.648 0.624 0.604 0.580 0.558 0.538 0.518 0.498 0.480 0.393 0.321350 0.654 0.631 0.608 0.586 0.565 0.544 0.524 0.505 0.486 0.467 0.450 0.369 0.301400 0.616 0.594 0.573 0.552 0.532 0.513 0.493 0.476 0.458 0.440 0.424 0.347 0.283450 0.582 0.561 0.542 0.522 0.503 0.484 0.466 0.449 0.433 0.416 0.401 0.328 0.268500 0.552 0.532 0.513 0.495 0.477 0.459 0.442 0.426 0.410 0.394 0.380 0.311 0.254550 0.525 0.506 0.488 0.470 0.454 0.437 0.421 0.405 0.390 0.375 0.361 0.296 0.242600 0.500 0.482 0.469 0.448 0.432 0.416 0.400 0.386 0.372 0.352 0.344 0.282 0.230650 0.477 0.460 0.444 0.427 0.412 0.397 0.382 0.368 0.354 0.341 0.328 0.269 0.219700 0.457 0.441 0.425 0.410 0.395 0.380 0.366 0.353 0.340 0.326 0.315 0.258 0.210800 0.420 0.404 0.389 0.375 0.362 0.350 0.336 0.323 0.311 0.300 0.290 0.237 0.193

Twin City Fan

Twin City Fan

ENGINEERING DATA

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Performance certified is for installation Type B & D: Free or ducted inlet, ducted outlet.Power rating (bhp) does not include transmission losses.Performance ratings include the effects of an outlet evasé in the airstream.

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 2758 1400 1501 2.53 3546 1800 1611 3.52 2072 6.37 2425 9.32 4334 2200 1741 4.78 2177 8.15 2532 11.64 2824 15.18 5122 2600 1901 6.48 2289 10.21 2635 14.24 2933 18.34 3189 22.46 3424 26.70 5910 3000 2078 8.66 2416 12.67 2745 17.20 3037 21.84 3297 26.51 3530 31.25 3739 35.97 3939 40.82 6698 3400 2269 11.41 2568 15.75 2862 20.54 3146 25.74 3401 30.95 3634 36.19 3849 41.50 4043 46.78 4224 52.09 7486 3800 2466 14.75 2735 19.47 2999 24.53 3260 30.04 3510 35.82 3738 41.59 3951 47.41 4149 53.24 8274 4200 2669 18.80 2914 23.90 3153 29.28 3388 34.98 3623 41.14 3848 47.49 4055 53.79 4251 60.16 8668 4400 2771 21.08 3007 26.40 3235 31.96 3460 37.80 3683 44.03 3904 50.62 4110 57.22 9062 4600 2874 23.56 3102 29.10 3319 34.81 3535 40.82 3747 47.12 3960 53.85 4166 60.78 9456 4800 2977 26.23 3199 32.02 3406 37.89 3613 44.05 3817 50.49 4020 57.30 4221 64.41 9850 5000 3082 29.14 3297 35.15 3496 41.22 3694 47.53 3890 54.10 4084 60.99 10244 5200 3187 32.26 3397 38.54 3587 44.73 3777 51.22 3966 57.95 4152 64.92 10638 5400 3292 35.59 3497 42.13 3681 48.53 3863 55.17 4045 62.06 4224 69.14 11032 5600 3398 39.17 3598 45.98 3777 52.60 3951 59.38 4125 66.37 11426 5800 3505 43.03 3699 50.04 3873 56.87 4040 63.79 4209 71.01

RTF 180Wheel Dia.: 20.5" Inlet Area: 1.29 ft2 Outlet Area: 1.23 ft2 Outlet Evasé: 1.97 ft2 Tip Speed: 5.37 x RPM

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 3332 1400 1368 3.06 4284 1800 1469 4.26 1889 7.70 2211 11.27 5236 2200 1588 5.78 1985 9.86 2308 14.06 2575 18.35 6188 2600 1735 7.86 2087 12.34 2403 17.23 2674 22.16 2908 27.17 3121 32.26 7140 3000 1897 10.50 2204 15.33 2504 20.82 2769 26.41 3006 32.05 3218 37.75 3409 43.48 3591 49.34 8092 3400 2071 13.82 2343 19.07 2610 24.84 2869 31.13 3101 37.42 3313 43.73 3509 50.15 3686 56.53 3851 62.95 9044 3800 2252 17.90 2496 23.59 2736 29.69 2973 36.34 3201 43.33 3409 50.31 3602 57.29 3783 64.36 9996 4200 2437 22.79 2660 28.97 2877 35.45 3091 42.35 3304 49.76 3509 57.43 3698 65.07 3876 72.73 10472 4400 2530 25.56 2745 31.99 2952 38.70 3157 45.77 3359 53.26 3560 61.22 3748 69.20 10948 4600 2625 28.60 2832 35.27 3030 42.21 3226 49.45 3418 57.02 3612 65.16 3799 73.50 11424 4800 2719 31.83 2921 38.83 3109 45.92 3297 53.36 3482 61.11 3667 69.35 3850 77.94 11900 5000 2815 35.37 3011 42.65 3191 49.94 3371 57.57 3549 65.48 3725 73.78 12376 5200 2911 39.16 3102 46.75 3275 54.24 3447 62.04 3619 70.18 3788 78.59 12852 5400 3007 43.20 3193 51.09 3361 58.85 3526 66.86 3691 75.15 3854 83.72 13328 5600 3104 47.56 3285 55.74 3448 63.75 3606 71.93 3765 80.42 13804 5800 3201 52.20 3378 60.71 3536 68.94 3688 77.32 3841 86.00

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 4102 1400 1231 3.77 5274 1800 1321 5.23 1699 9.47 1989 13.87 6446 2200 1428 7.12 1785 12.12 2076 17.31 2316 22.58 7618 2600 1559 9.65 1877 15.19 2161 21.19 2405 27.27 2615 33.41 2808 39.73 8790 3000 1704 12.88 1982 18.86 2251 25.58 2490 32.48 2704 39.45 2894 46.44 3066 53.50 3230 60.71 9962 3400 1860 16.95 2106 23.43 2347 30.56 2580 38.29 2789 46.04 2980 53.83 3156 61.71 3315 69.56 3463 77.42 11134 3800 2023 21.97 2243 28.97 2459 36.48 2673 44.67 2878 53.26 3065 61.84 3240 70.52 3402 79.16 12306 4200 2188 27.93 2389 35.52 2586 43.58 2778 52.02 2971 61.20 3156 70.68 3326 80.07 3486 89.48 12892 4400 2272 31.34 2466 39.27 2653 47.54 2837 56.20 3020 65.48 3201 75.27 3371 85.16 13478 4600 2357 35.06 2544 43.29 2722 51.79 2899 60.72 3073 70.10 3248 80.14 3416 90.39 14064 4800 2442 39.05 2623 47.61 2793 56.36 2963 65.54 3130 75.10 3296 85.19 3462 95.86 14650 5000 2527 43.33 2704 52.30 2867 61.32 3029 70.68 3190 80.47 3349 90.72 15236 5200 2613 47.96 2785 57.29 2942 66.57 3098 76.24 3252 86.17 3405 96.59 15822 5400 2700 52.96 2867 62.63 3019 72.22 3168 82.08 3317 92.31 3464 102.86 16408 5600 2787 58.30 2950 68.35 3097 78.21 3240 88.32 3383 98.75 16994 5800 2874 63.98 3033 74.41 3176 84.58 3313 94.88 3451 105.58

RTF 200Wheel Dia.: 22.5" Inlet Area: 1.60 ft2 Outlet Area: 1.48 ft2 Outlet Evasé: 2.38 ft2 Tip Speed: 5.89 x RPM

RTF 220Wheel Dia.: 25" Inlet Area: 1.94 ft2 Outlet Area: 1.81 ft2 Outlet Evasé: 2.93 ft2 Tip Speed: 6.54 x RPM

Unshaded Area = Class 18 (Max. RPM 3350) Shaded Area = Class 23 (Max. RPM 4263) Underlined numbers = maximum static efficiency.

Not licensed to bear the AMCA Seal.

Not licensed to bear the AMCA Seal.

Not licensed to bear the AMCA Seal.

Unshaded Area = Class 18 (Max. RPM 3045) Shaded Area = Class 23 (Max. RPM 3884) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 2740) Shaded Area = Class 23 (Max. RPM 3501) Underlined numbers = maximum static efficiency.

PERFORMANCE DATA

TWIN CITY FAN - CATALOG 9508

Performance certified is for installation Type B & D: Free or ducted inlet, ducted outlet.Power rating (bhp) does not include transmission losses.Performance ratings include the effects of an outlet evasé in the airstream.

RTF 270Wheel Dia.: 30.375" Inlet Area: 2.92 ft2 Outlet Area: 2.56 ft2 Outlet Evasé: 4.33 ft2 Tip Speed: 7.95 x RPM

RTF 300Wheel Dia.: 33.5" Inlet Area: 3.51 ft2 Outlet Area: 3.11 ft2 Outlet Evasé: 5.27 ft2 Tip Speed: 8.77 x RPM

RTF 240Wheel Dia.: 27.5" Inlet Area: 2.41 ft2 Outlet Area: 2.19 ft2 Outlet Evasé: 3.55 ft2 Tip Speed: 7.20 x RPM

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 4970 1400 1119 4.56 6390 1800 1201 6.34 1545 11.48 1808 16.79 7810 2200 1299 8.63 1623 14.68 1888 20.98 2106 27.36 9230 2600 1418 11.69 1707 18.41 1965 25.67 2187 33.05 2378 40.49 2553 48.12 10650 3000 1551 15.64 1802 22.84 2048 31.05 2265 39.39 2459 47.82 2632 56.30 2788 64.82 2937 73.56 12070 3400 1693 20.59 1916 28.43 2134 37.02 2346 46.39 2536 55.78 2710 65.24 2870 74.79 3015 84.33 3149 93.81 13490 3800 1841 26.66 2041 35.16 2237 44.25 2431 54.15 2618 64.60 2788 75.01 2946 85.43 3094 95.97 14910 4200 1992 33.95 2174 43.12 2352 52.82 2527 63.09 2702 74.18 2870 85.65 3024 96.98 3170 108.44 15620 4400 2068 38.07 2244 47.66 2413 57.62 2581 68.18 2747 79.40 2911 91.23 3065 103.15 16330 4600 2145 42.56 2315 52.54 2477 62.87 2637 73.63 2795 84.99 2954 97.15 3107 109.59 17040 4800 2222 47.38 2387 57.79 2541 68.36 2696 79.54 2847 91.06 2998 103.30 3148 116.14 17750 5000 2300 52.61 2461 63.51 2608 74.35 2756 85.77 2902 97.61 3046 109.97 18460 5200 2378 58.22 2535 69.58 2677 80.78 2818 92.43 2959 104.58 3097 117.09 19170 5400 2457 64.28 2609 76.01 2747 87.63 2882 99.55 3017 111.90 3151 124.74 19880 5600 2536 70.74 2685 83.00 2818 94.90 2948 107.17 3078 119.81 20590 5800 2616 77.71 2761 90.40 2890 102.65 3015 115.19 3140 128.12

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 6062 1400 969 5.20 1287 10.18 1549 15.57 7794 1800 1036 7.18 1340 13.13 1583 19.54 1798 26.26 1993 33.19 9526 2200 1111 9.66 1404 16.70 1638 24.01 1839 31.67 2023 39.64 2194 47.85 2354 56.20 2508 64.81 11258 2600 1198 12.76 1472 20.87 1700 29.20 1897 37.81 2071 46.66 2233 55.87 2386 65.27 2530 74.79 2667 84.44 12990 3000 1303 16.83 1546 25.72 1768 35.21 1959 44.77 2130 54.53 2287 64.62 2432 74.94 2569 85.43 2701 96.11 14722 3400 1417 21.92 1627 31.37 1837 41.90 2026 52.64 2194 63.47 2346 74.30 2489 85.52 2621 96.83 2747 108.47 16454 3800 1540 28.33 1721 38.21 1914 49.57 2095 61.38 2261 73.33 2411 85.27 2549 97.20 2680 109.45 2803 121.84 18186 4200 1668 36.15 1827 46.46 1997 58.31 2169 71.11 2329 84.08 2478 97.17 2614 110.17 2742 123.32 2863 136.60 19052 4400 1733 40.60 1882 51.07 2042 63.18 2208 76.37 2364 89.82 2511 103.40 2648 117.13 2774 130.67 19918 4600 1799 45.46 1939 56.09 2090 68.45 2248 81.93 2401 95.91 2546 110.10 2681 124.19 2808 138.51 20784 4800 1866 50.78 1998 61.59 2141 74.18 2290 87.86 2440 102.35 2581 116.96 2715 131.65 2841 146.41 21650 5000 1933 56.48 2058 67.49 2193 80.24 2334 94.17 2479 109.01 2617 124.10 2749 139.33 2875 154.74 22516 5200 2001 62.69 2119 73.84 2248 86.88 2380 100.86 2520 116.15 2656 131.77 2784 147.34 23382 5400 2069 69.33 2182 80.78 2303 93.82 2430 108.22 2561 123.45 2695 139.66 2821 155.81 24248 5600 2137 76.43 2245 88.12 2360 101.32 2481 115.93 2605 131.33 2735 147.96 2859 164.58 25114 5800 2206 84.10 2309 96.00 2419 109.43 2534 124.18 2652 139.83 2775 156.45

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 7378 1400 879 6.33 1167 12.39 1405 18.97 9486 1800 940 8.76 1216 16.01 1435 23.76 1630 31.94 1807 40.38 11594 2200 1008 11.77 1273 20.32 1485 29.20 1668 38.58 1835 48.29 1989 58.20 2135 68.45 2274 78.86 13702 2600 1087 15.56 1335 25.40 1542 35.57 1720 46.01 1878 56.78 2025 68.02 2163 79.38 2294 91.01 2418 102.73 15810 3000 1182 20.51 1402 31.31 1603 42.84 1777 54.55 1932 66.42 2074 78.67 2205 91.17 2329 103.90 2449 116.94 17918 3400 1286 26.74 1476 38.22 1666 51.01 1838 64.15 1989 77.19 2128 90.51 2257 104.08 2377 117.89 2491 132.01 20026 3800 1397 34.51 1561 46.53 1736 60.36 1900 74.73 2050 89.20 2186 103.74 2312 118.39 2430 133.17 2542 148.33 22134 4200 1513 44.02 1657 56.56 1811 70.97 1967 86.56 2112 102.34 2247 118.26 2371 134.18 2487 150.19 2596 166.22 23188 4400 1572 49.44 1707 62.18 1852 76.92 2003 93.05 2144 109.36 2278 126.02 2401 142.52 2516 159.13 24242 4600 1632 55.38 1759 68.34 1895 83.26 2039 99.78 2178 116.84 2309 134.04 2432 151.30 2546 168.51 25296 4800 1693 61.88 1812 74.96 1942 90.34 2077 106.99 2213 124.63 2340 142.26 2462 160.23 2576 178.14 26350 5000 1754 68.86 1867 82.23 1989 97.69 2117 114.69 2249 132.85 2374 151.20 2493 169.61 2607 188.32 27404 5200 1815 76.34 1923 90.05 2039 105.80 2159 122.87 2285 141.32 2409 160.47 2525 179.41 28458 5400 1877 84.47 1979 98.34 2089 114.26 2204 131.77 2323 150.36 2444 170.00 2558 189.60 29512 5600 1939 93.16 2037 107.41 2141 123.44 2251 141.29 2363 159.98 2480 180.03 2593 200.39 30566 5800 2001 102.41 2095 117.01 2194 133.23 2299 151.34 2405 170.19 2517 190.53

Not licensed to bear the AMCA Seal.

Unshaded Area = Class 18 (Max. RPM 2497) Shaded Area = Class 23 (Max. RPM 3182) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 2264) Shaded Area = Class 23 (Max. RPM 2892) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 2052) Shaded Area = Class 23 (Max. RPM 2622) Underlined numbers = maximum static efficiency.

Fan Efficiency Grade = FEG80

Fan Efficiency Grade = FEG80

PERFORMANCE DATA

WWW.TCF.COM 9

Performance certified is for installation Type B & D: Free or ducted inlet, ducted outlet.Power rating (bhp) does not include transmission losses.Performance ratings include the effects of an outlet evasé in the airstream.

RTF 330Wheel Dia.: 37" Inlet Area: 4.31 ft2 Outlet Area: 3.79 ft2 Outlet Evasé: 6.42 ft2 Tip Speed: 9.69 x RPM

RTF 360Wheel Dia.: 41" Inlet Area: 5.33 ft2 Outlet Area: 4.65 ft2 Outlet Evasé: 7.89 ft2 Tip Speed: 10.73 x RPM

RTF 400Wheel Dia.: 45.25" Inlet Area: 6.49 ft2 Outlet Area: 5.66 ft2 Outlet Evasé: 9.61 ft2 Tip Speed: 11.85 x RPM

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 8988 1400 795 7.69 1057 15.12 1272 23.11 11556 1800 851 10.67 1100 19.46 1299 28.94 1476 38.94 1636 49.21 14124 2200 912 14.32 1152 24.73 1344 35.55 1510 47.01 1661 58.82 1801 70.95 1933 83.41 2059 96.12 16692 2600 983 18.91 1208 30.92 1396 43.35 1557 56.05 1700 69.18 1833 82.85 1958 96.69 2077 110.92 2189 125.16 19260 3000 1069 24.93 1269 38.14 1451 52.18 1608 66.38 1749 80.93 1877 95.78 1996 111.06 2109 126.70 2217 142.47 21828 3400 1163 32.50 1336 46.57 1508 62.14 1663 78.04 1800 93.96 1926 110.22 2043 126.78 2152 143.69 2255 160.85 24396 3800 1264 42.01 1412 56.58 1571 73.49 1719 90.91 1855 108.56 1979 126.42 2093 144.25 2200 162.31 2301 180.69 26964 4200 1369 53.59 1499 68.81 1639 86.43 1780 105.38 1911 124.53 2034 144.07 2146 163.41 2251 182.91 2350 202.51 28248 4400 1422 60.15 1544 75.62 1675 93.49 1812 113.16 1940 133.09 2061 153.29 2173 173.53 2277 193.73 29532 4600 1476 67.34 1591 83.10 1715 101.41 1845 121.43 1971 142.25 2089 163.04 2201 184.21 2304 205.11 30816 4800 1531 75.21 1639 91.17 1757 109.93 1879 130.14 2003 151.80 2118 173.28 2228 195.04 2332 217.08 32100 5000 1586 83.67 1689 100.05 1800 118.98 1915 139.47 2035 161.68 2148 183.97 2256 206.45 2359 229.17 33384 5200 1641 92.73 1739 109.45 1844 128.59 1953 149.43 2068 172.10 2180 195.35 2285 218.40 34668 5400 1697 102.60 1790 119.59 1890 139.06 1994 160.33 2102 183.02 2212 207.04 2315 230.85 35952 5600 1753 113.14 1842 130.53 1937 150.22 2036 171.80 2138 194.68 2244 219.10 2347 244.10 37236 5800 1810 124.57 1895 142.32 1985 162.15 2079 183.90 2176 207.11 2278 232.04

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 11046 1400 724 9.65 963 18.86 1153 28.68 14202 1800 769 13.01 1002 24.44 1184 36.15 1341 48.38 1484 61.21 17358 2200 819 17.22 1046 30.66 1225 44.71 1376 58.76 1513 73.36 1637 88.26 1754 103.69 20514 2600 875 22.43 1092 37.72 1268 53.86 1418 70.35 1550 86.81 1671 103.56 1784 120.69 1889 138.09 1988 155.64 23670 3000 950 29.56 1141 45.93 1314 64.05 1462 82.72 1593 101.61 1711 120.35 1820 139.22 1922 158.20 2020 177.77 26826 3400 1034 38.72 1193 55.49 1360 75.32 1507 96.00 1636 116.92 1754 138.29 1862 159.43 1962 180.47 2056 201.53 29982 3800 1124 50.24 1257 67.24 1411 88.39 1553 110.72 1681 133.53 1797 156.76 1904 180.28 2004 203.83 2097 227.06 33138 4200 1218 64.38 1332 81.56 1462 102.73 1602 127.19 1727 151.81 1842 176.86 1948 202.31 2047 228.13 2139 253.63 34716 4400 1266 72.49 1372 89.73 1492 111.01 1627 136.01 1750 161.41 1865 187.64 1970 213.78 2068 240.37 36294 4600 1315 81.43 1414 98.77 1526 120.27 1652 145.28 1775 171.86 1888 198.81 1993 226.02 2090 253.26 37872 4800 1364 91.06 1457 108.56 1562 130.23 1678 155.07 1800 182.59 1911 210.29 2015 238.34 2113 266.94 39450 5000 1413 101.40 1501 119.17 1600 141.06 1707 165.79 1825 193.85 1935 222.41 2038 251.40 2135 280.72 41028 5200 1463 112.72 1546 130.67 1639 152.59 1739 177.46 1850 205.54 1961 235.52 2062 265.18 42606 5400 1513 124.84 1592 143.13 1679 164.90 1774 190.20 1877 218.13 1986 248.79 2086 279.31 44184 5600 1563 137.79 1639 156.61 1721 178.39 1810 203.58 1906 231.53 2010 262.24 2111 294.15 45762 5800 1614 151.87 1686 170.88 1764 192.84 1848 218.07 1937 245.71 2036 276.81 2136 309.48

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 13454 1400 656 11.76 872 22.93 1045 34.96 17298 1800 697 15.86 908 29.78 1073 44.06 1215 58.92 1345 74.62 21142 2200 742 20.97 948 37.38 1110 54.47 1247 71.61 1371 89.38 1483 107.45 1589 126.24 24986 2600 793 27.34 990 46.03 1149 65.61 1285 85.73 1404 105.64 1514 126.12 1616 146.89 1711 168.02 1802 189.80 28830 3000 861 36.04 1034 55.97 1190 77.90 1324 100.60 1443 123.66 1550 146.50 1649 169.56 1742 192.86 1830 216.43 32674 3400 937 47.18 1081 67.60 1233 91.90 1365 116.81 1482 142.31 1589 168.36 1687 194.15 1777 219.55 1863 245.52 36518 3800 1018 61.12 1139 81.91 1278 107.54 1407 134.83 1523 162.61 1628 190.87 1725 219.51 1816 248.36 1900 276.54 40362 4200 1104 78.51 1207 99.37 1325 125.22 1451 154.75 1565 184.98 1669 215.42 1765 246.40 1854 277.53 1939 309.36 42284 4400 1147 88.28 1243 109.26 1352 135.26 1474 165.60 1586 196.74 1690 228.62 1785 260.41 1874 292.89 44206 4600 1191 99.06 1281 120.26 1383 146.60 1497 177.02 1608 209.22 1710 241.86 1806 275.39 1894 308.62 46128 4800 1236 110.94 1320 132.19 1415 158.53 1520 188.74 1631 222.42 1732 256.36 1826 290.43 1914 324.86 48050 5000 1280 123.43 1360 145.15 1450 171.91 1547 202.07 1654 236.28 1754 271.25 1847 306.41 1935 342.20 49972 5200 1326 137.42 1401 159.23 1485 185.84 1576 216.29 1676 250.24 1776 286.48 1868 322.82 51894 5400 1371 152.09 1443 174.53 1522 201.13 1607 231.51 1700 265.36 1799 302.79 1890 340.16 53816 5600 1416 167.76 1485 190.73 1559 217.14 1640 247.97 1726 281.53 1821 319.30 1913 358.43 55738 5800 1462 184.84 1528 208.28 1598 234.75 1675 265.89 1755 299.25 1844 336.75 1936 377.32

Unshaded Area = Class 18 (Max. RPM 1858) Shaded Area = Class 23 (Max. RPM 2374) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 1676) Shaded Area = Class 23 (Max. RPM 2143) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 1519) Shaded Area = Class 23 (Max. RPM 1942) Underlined numbers = maximum static efficiency.

Fan Efficiency Grade = FEG80

Fan Efficiency Grade = FEG80

Fan Efficiency Grade = FEG80

PERFORMANCE DATA

TWIN CITY FAN - CATALOG 95010

Performance certified is for installation Type B & D: Free or ducted inlet, ducted outlet.Power rating (bhp) does not include transmission losses.Performance ratings include the effects of an outlet evasé in the airstream.

RTF 450Wheel Dia.: 50" Inlet Area: 7.92 ft2 Outlet Area: 6.92 ft2 Outlet Evasé: 11.70 ft2 Tip Speed: 13.09 x RPM

RTF 490Wheel Dia.: 55.125" Inlet Area: 9.68 ft2 Outlet Area: 8.41 ft2 Outlet Evasé: 14.25 ft2 Tip Speed: 14.43 x RPM

RTF 540Wheel Dia.: 61" Inlet Area: 11.86 ft2 Outlet Area: 10.35 ft2 Outlet Evasé: 17.50 ft2 Tip Speed: 15.97 x RPM

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 16380 1400 593 14.29 789 27.93 946 42.64 21060 1800 630 19.27 822 36.34 971 53.69 1100 71.90 1217 90.88 25740 2200 671 25.51 857 45.43 1004 66.30 1128 87.17 1240 108.74 1342 130.94 1438 153.83 30420 2600 717 33.26 895 55.94 1039 79.81 1162 104.27 1270 128.60 1369 153.34 1462 178.87 1548 204.63 1630 230.98 35100 3000 778 43.78 935 68.09 1076 94.73 1198 122.59 1305 150.45 1402 178.31 1491 206.13 1576 234.86 1656 263.74 39780 3400 846 57.19 977 82.11 1115 111.80 1234 141.98 1341 173.45 1437 204.82 1526 236.36 1608 267.56 1685 298.75 44460 3800 920 74.30 1029 99.42 1156 130.93 1272 163.88 1377 197.71 1473 232.57 1560 267.07 1642 301.98 1719 336.85 49140 4200 997 95.23 1090 120.50 1198 152.29 1312 188.21 1415 224.92 1509 261.91 1596 299.70 1677 337.88 1753 376.03 51480 4400 1036 107.14 1123 132.68 1222 164.36 1333 201.49 1434 239.24 1528 277.97 1614 316.69 1695 356.52 53820 4600 1076 120.31 1157 145.91 1249 177.75 1353 215.00 1454 254.47 1547 294.59 1633 334.91 1713 375.62 56160 4800 1116 134.50 1192 160.30 1279 192.74 1374 229.37 1475 270.65 1566 311.72 1651 353.14 1731 395.31 58500 5000 1156 149.75 1228 175.97 1310 208.72 1398 245.40 1495 287.04 1586 329.90 1670 372.59 1750 416.41 60840 5200 1197 166.50 1265 193.04 1341 225.33 1424 262.61 1516 304.69 1606 348.52 1689 392.57 63180 5400 1237 184.00 1303 211.62 1374 243.67 1452 281.12 1537 322.68 1627 368.47 1709 413.74 65520 5600 1279 203.62 1341 231.31 1408 263.40 1482 301.25 1560 342.06 1647 388.64 1729 435.38 67860 5800 1320 224.07 1379 252.14 1443 284.64 1513 322.64 1586 363.51 1667 409.31 1750 458.45

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 19950 1400 538 17.40 716 34.04 858 51.89 25650 1800 572 23.52 745 44.12 881 65.40 998 87.57 1104 110.66 31350 2200 609 31.10 778 55.41 911 80.76 1023 106.04 1125 132.43 1217 159.26 1304 187.09 37050 2600 651 40.58 812 68.12 943 97.29 1055 127.24 1153 156.92 1242 186.73 1326 217.64 1405 249.51 1479 281.42 42750 3000 706 53.30 849 83.10 977 115.62 1087 149.31 1184 183.21 1272 217.15 1353 251.18 1429 285.52 1502 320.92 48450 3400 768 69.70 887 100.17 1012 136.29 1120 173.07 1217 211.37 1304 249.56 1384 287.51 1459 325.91 1529 364.01 54150 3800 835 90.50 934 121.16 1049 159.51 1155 200.04 1250 241.14 1336 282.92 1416 325.66 1490 367.92 1560 410.52 59850 4200 905 116.03 990 147.11 1087 185.45 1191 229.53 1284 274.00 1370 319.56 1448 364.91 1522 411.83 62700 4400 941 130.79 1020 161.98 1110 200.79 1210 245.70 1302 291.95 1387 338.97 1465 386.12 1538 434.24 65550 4600 977 146.72 1051 178.19 1135 217.38 1228 262.08 1320 310.42 1404 359.05 1482 408.14 1554 457.21 68400 4800 1014 164.36 1083 195.87 1161 234.92 1248 280.20 1339 330.10 1421 379.72 1499 430.94 1571 481.82 71250 5000 1050 182.80 1116 215.19 1189 254.30 1269 299.18 1357 349.98 1439 401.74 1516 454.44 74100 5200 1087 203.12 1149 235.67 1218 275.10 1293 320.42 1376 371.44 1458 425.14 1533 478.56 76950 5400 1124 224.87 1183 258.01 1248 297.50 1319 343.41 1395 393.29 1476 448.53 1551 504.22 79800 5600 1162 248.75 1218 282.36 1279 321.67 1346 367.78 1417 417.86 1495 473.89 1570 531.44 82650 5800 1199 273.55 1253 308.15 1311 347.78 1374 393.74 1440 443.44 1514 499.90

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 24500 1400 487 21.44 647 41.75 775 63.57 31500 1800 517 28.85 674 54.28 796 80.18 902 107.45 997 135.50 38500 2200 551 38.27 704 68.21 824 99.31 925 130.28 1017 162.61 1101 195.99 1179 229.88 45500 2600 589 49.91 735 83.93 853 119.64 954 156.34 1042 192.48 1123 229.42 1199 267.43 1270 306.28 1337 345.57 52500 3000 639 65.60 768 102.20 883 141.82 983 183.47 1071 225.33 1150 266.67 1223 308.31 1292 350.72 1358 394.21 59500 3400 696 86.10 802 123.00 915 167.36 1013 212.76 1100 259.33 1179 306.48 1252 353.69 1319 400.17 1382 446.70 66500 3800 757 111.91 846 149.50 949 196.22 1044 245.45 1130 295.98 1208 347.48 1280 399.67 1348 452.71 1410 503.72 73500 4200 820 143.24 896 181.04 984 228.52 1077 281.97 1161 336.55 1239 392.74 1310 448.94 1376 505.62 1439 563.52 77000 4400 853 161.67 924 199.87 1004 246.76 1094 301.70 1177 358.34 1254 416.23 1325 474.63 1391 533.75 80500 4600 885 180.97 952 219.80 1027 267.40 1111 322.44 1194 381.68 1269 440.50 1340 501.28 1406 562.62 84000 4800 918 202.38 981 241.62 1051 289.33 1129 344.61 1211 405.69 1285 466.53 1355 528.84 1421 592.42 87500 5000 952 226.09 1011 265.52 1077 313.74 1148 367.89 1228 430.91 1302 494.39 1371 558.45 1436 623.26 91000 5200 985 250.80 1041 290.87 1103 339.13 1170 394.22 1244 455.99 1319 522.93 1387 588.89 94500 5400 1019 278.04 1072 318.62 1130 366.57 1194 422.96 1262 483.70 1336 552.63 1403 620.05 98000 5600 1053 307.16 1103 348.01 1158 396.26 1218 452.43 1282 513.96 1352 582.32 1420 653.24 101500 5800 1087 338.23 1135 380.08 1187 428.43 1244 485.09 1303 545.57 1369 614.00 1437 687.57

Unshaded Area = Class 18 (Max. RPM 1375) Shaded Area = Class 23 (Max. RPM 1757) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 1247) Shaded Area = Class 23 (Max. RPM 1573) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 1127) Shaded Area = Class 23 (Max. RPM 1440) Underlined numbers = maximum static efficiency.

Fan Efficiency Grade = FEG80

Fan Efficiency Grade = FEG80

Fan Efficiency Grade = FEG80

PERFORMANCE DATA

WWW.TCF.COM 11

Performance certified is for installation Type B & D: Free or ducted inlet, ducted outlet.Power rating (bhp) does not include transmission losses.Performance ratings include the effects of an outlet evasé in the airstream.

RTF 600Wheel Dia.: 67.5" Inlet Area: 14.47 ft2 Outlet Area: 12.58 ft2 Outlet Evasé: 21.30 ft2 Tip Speed: 17.67 x RPM

RTF 660Wheel Dia.: 74.25" Inlet Area: 17.57 ft2 Outlet Area: 15.28 ft2 Outlet Evasé: 25.80 ft2 Tip Speed: 19.44 x RPM

RTF 730Wheel Dia.: 82" Inlet Area: 21.48 ft2 Outlet Area: 18.63 ft2 Outlet Evasé: 31.50 ft2 Tip Speed: 21.47 x RPM

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 29820 1400 439 25.98 584 50.76 700 77.40 38340 1800 467 35.18 608 65.91 719 97.69 814 130.55 901 165.24 46860 2200 497 46.47 635 82.82 744 120.91 835 158.46 918 197.72 994 238.42 1065 280.00 55380 2600 531 60.57 663 101.92 770 145.59 861 190.09 941 234.42 1014 279.22 1083 325.82 1147 373.02 1207 420.24 63900 3000 576 79.65 692 123.71 797 172.53 887 223.01 967 274.33 1038 324.30 1104 374.99 1167 427.31 1226 479.56 72420 3400 626 103.88 723 149.15 825 202.97 914 258.55 993 315.63 1064 372.62 1130 430.09 1191 487.20 1248 543.95 80940 3800 681 135.11 762 180.99 856 238.25 942 298.31 1020 360.15 1091 423.52 1156 487.05 1216 549.65 1273 613.08 89460 4200 738 173.18 807 219.24 887 277.05 972 343.00 1048 409.53 1118 477.37 1182 545.63 1242 615.13 1298 684.11 93720 4400 767 194.94 831 241.03 905 299.26 987 366.57 1062 435.52 1131 505.20 1195 576.07 1255 648.57 97980 4600 796 218.40 857 265.85 925 323.67 1002 391.39 1077 463.50 1145 535.33 1209 609.10 1268 682.79 102240 4800 826 244.53 883 292.15 947 350.73 1018 418.11 1092 492.21 1159 566.35 1223 643.33 1282 719.73 106500 5000 855 271.67 909 320.01 969 378.71 1035 446.35 1107 522.29 1174 599.70 1237 678.63 1296 758.00 110760 5200 886 302.76 936 350.61 993 410.17 1054 477.35 1122 553.59 1189 633.87 1251 714.90 115020 5400 916 335.01 964 384.22 1017 443.00 1075 511.42 1138 587.01 1205 670.90 1265 752.02 119280 5600 946 369.44 992 419.84 1042 478.65 1097 547.75 1155 622.26 1219 706.20 1281 793.59 123540 5800 977 407.38 1021 458.85 1068 517.41 1120 586.74 1174 660.91 1235 745.95 1296 834.56

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 36120 1400 400 31.67 531 61.49 637 94.01 46440 1800 424 42.42 553 79.91 654 118.47 740 158.07 819 200.02 56760 2200 452 56.32 577 100.12 676 146.14 760 192.53 835 239.78 904 289.03 968 338.85 67080 2600 483 73.43 603 123.55 700 176.26 783 230.38 855 283.36 922 338.27 985 395.03 1043 451.98 1098 509.85 77400 3000 524 96.59 630 150.41 725 209.26 807 270.61 879 332.01 944 393.08 1004 454.50 1061 517.49 1115 581.34 87720 3400 570 126.31 658 181.14 751 246.69 831 313.11 903 382.45 968 452.13 1027 520.28 1083 590.29 1135 659.34 98040 3800 619 163.42 693 219.31 778 288.22 857 361.94 927 435.60 992 512.99 1051 589.78 1106 666.41 1157 741.70 108360 4200 671 209.64 734 265.72 807 336.16 884 415.73 953 496.21 1016 577.28 1075 661.37 1129 744.52 1181 830.31 113520 4400 697 235.61 756 292.32 823 362.59 898 444.84 966 528.12 1029 613.06 1087 698.60 1141 785.33 118680 4600 724 264.68 779 321.60 841 391.87 911 473.95 979 560.94 1041 648.23 1100 739.20 1153 827.17 123840 4800 751 296.00 803 353.90 861 424.61 926 507.03 993 596.35 1054 686.32 1112 779.19 1166 872.50 129000 5000 778 329.65 827 388.15 882 460.03 941 540.44 1007 633.48 1068 727.47 1125 822.54 1178 917.20 134160 5200 806 367.09 852 425.92 903 496.84 959 579.25 1021 672.13 1082 769.65 1138 867.10 139320 5400 833 405.77 877 465.96 926 538.65 978 620.35 1035 711.53 1095 811.16 1151 912.74 144480 5600 861 448.60 903 510.04 948 580.58 998 664.37 1051 755.36 1109 856.81 1165 961.80 149640 5800 889 494.31 929 556.71 972 628.26 1019 711.79 1068 801.58 1123 903.65 1179 1012.38

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 44100 1400 362 38.58 481 75.13 577 114.86 56700 1800 384 51.80 501 97.67 592 144.44 671 193.72 742 244.53 69300 2200 409 68.58 523 122.54 612 178.25 688 234.79 756 292.53 818 352.00 877 414.25 81900 2600 437 89.37 546 150.76 634 215.24 709 281.14 775 346.88 835 413.02 892 482.25 944 550.86 994 621.81 94500 3000 474 117.47 570 183.09 657 255.96 730 329.23 796 405.27 855 480.06 909 554.46 961 632.09 1010 710.28 107100 3400 516 153.95 596 221.24 680 301.00 753 382.89 818 467.26 876 550.75 930 635.05 980 718.93 1027 802.93 119700 3800 561 199.87 628 268.18 705 352.49 776 441.65 840 532.71 898 625.46 952 720.43 1002 814.52 1048 906.03 132300 4200 608 256.24 665 324.68 731 410.63 800 506.43 863 605.65 921 706.79 973 806.04 1023 910.36 1069 1012.15 138600 4400 632 288.58 685 357.28 746 443.78 813 542.55 875 645.10 932 748.71 985 854.37 1034 960.62 144900 4600 656 323.46 706 393.33 762 478.98 825 578.54 887 685.68 943 791.98 996 901.92 1045 1012.16 151200 4800 681 362.59 728 433.28 780 518.74 838 617.59 900 729.74 955 839.10 1007 951.08 1056 1065.27 157500 5000 705 402.99 750 475.66 799 561.93 853 661.57 912 773.44 967 887.51 1019 1004.67 1067 1120.28 163800 5200 730 448.07 772 520.57 818 606.83 869 708.24 924 818.80 980 939.90 1030 1056.70 170100 5400 755 496.35 795 570.27 839 658.27 886 757.90 938 870.47 992 991.27 1042 1113.07 176400 5600 780 547.94 818 622.90 859 709.67 904 811.33 952 922.59 1005 1048.05 1055 1173.98 182700 5800 806 605.20 842 680.99 881 768.59 923 869.16 968 980.80 1017 1103.10 1068 1236.83

Unshaded Area = Class 18 (Max. RPM 1019) Shaded Area = Class 23 (Max. RPM 1302) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 926) Shaded Area = Class 23 (Max. RPM 1183) Underlined numbers = maximum static efficiency.

Unshaded Area = Class 18 (Max. RPM 838) Shaded Area = Class 23 (Max. RPM 1071) Underlined numbers = maximum static efficiency.

Fan Efficiency Grade = FEG80

Fan Efficiency Grade = FEG80

Fan Efficiency Grade = FEG80

PERFORMANCE DATA

TWIN CITY FAN - CATALOG 95012

RTF 800Wheel Dia.: 90.75" Inlet Area: 26.35 ft2 Outlet Area: 22.84 ft2 Outlet Evasé: 38.60 ft2 Tip Speed: 23.76 x RPM

Performance certified is for installation Type B & D: Free or ducted inlet, ducted outlet.Power rating (bhp) does not include transmission losses.Performance ratings include the effects of an outlet evasé in the airstream.

4" SP 8" SP 12" SP 16" SP 20" SP 24" SP 28" SP 32" SP 36" SP CFM OV

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 54040 1400 327 47.22 435 92.28 521 140.43 69480 1800 347 63.47 453 119.90 535 177.05 606 236.98 670 298.98 84920 2200 370 84.32 473 150.53 553 218.38 622 288.12 683 358.23 739 431.03 792 506.69 100360 2600 395 109.59 493 184.29 573 263.86 641 345.00 700 424.47 755 507.05 806 590.83 853 674.93 898 761.44 115800 3000 429 144.60 515 224.24 593 312.54 660 404.03 719 495.99 773 589.13 822 680.89 868 773.50 912 868.44 131240 3400 467 189.49 538 270.22 614 367.96 680 468.26 739 572.13 792 675.91 841 779.85 886 882.25 929 986.95 146680 3800 507 244.94 567 327.73 637 431.78 701 540.64 759 652.59 812 767.89 860 881.96 905 996.60 947 1110.15 162120 4200 550 314.92 601 397.93 660 501.84 723 620.74 780 742.56 832 865.26 880 990.19 924 1113.97 966 1240.27 169840 4400 571 353.34 619 437.73 674 543.46 735 665.72 790 788.39 842 916.76 890 1046.60 934 1175.71 177560 4600 593 396.69 638 481.95 689 587.93 746 710.30 802 841.65 853 973.40 900 1105.03 944 1239.00 185280 4800 615 443.38 658 531.17 705 635.97 758 758.97 813 893.24 863 1028.27 910 1165.54 954 1304.33 193000 5000 638 495.86 678 583.42 722 688.43 771 811.18 824 947.27 874 1088.14 921 1231.80 964 1371.90 200720 5200 660 549.77 698 638.82 740 745.94 785 866.87 835 1003.42 885 1149.44 931 1295.84 208440 5400 683 610.07 719 700.40 758 805.96 801 929.86 847 1064.25 897 1217.02 942 1365.59 216160 5600 705 671.72 740 765.66 777 872.02 817 994.42 860 1129.33 908 1283.49 953 1436.91 223880 5800 728 740.39 761 834.71 796 941.23 834 1064.62 875 1202.82 919 1351.60 965 1515.12

Unshaded Area = Class 18 (Max. RPM 758) Shaded Area = Class 23 (Max. RPM 968) Underlined numbers = maximum static efficiency.

DIMENSIONAL DATA

Inlet Flange

FAN SIZE

BC C CC DH NH TH

180 18.00 15.75 19.75 0.56 12 0.19

200 19.75 17.50 21.50 0.56 12 0.19

220 21.50 19.25 23.25 0.56 12 0.19

240 23.25 21.00 25.00 0.56 16 0.19

270 25.75 23.50 27.50 0.56 16 0.19

300 28.00 25.75 29.75 0.56 16 0.19

330 30.75 28.50 32.50 0.56 16 0.19

360 33.75 31.63 35.63 0.56 24 0.19

400 37.00 34.88 38.88 0.56 32 0.19

450 40.63 38.50 42.50 0.56 32 0.19

490 46.00 42.50 48.50 0.69 40 0.25

540 50.50 47.00 53.00 0.69 40 0.25

600 55.50 52.00 58.00 0.69 40 0.25

660 60.75 57.25 63.25 0.69 40 0.25

730 67.75 63.25 71.25 0.69 48 0.31

800 74.50 70.00 78.00 0.69 48 0.31

Fan Efficiency Grade = FEG80

PERFORMANCE DATA

WWW.TCF.COM 13

DIMENSIONS ARE NOT TO BE USED FOR CONSTRUCTION. CERTIFIED DRAWINGS AVAILABLE UPON REQUEST.

NOTES:1. CW rotation shown, CCW rotation is similar but opposite.2. Standard accessories: bolted access door, housing drain, shaft seal, punched inlet & outlet flanges.3. These holes are in Size 270, 300 & 330 Only.

FAN SIZE

A B BHDB DC

DD DE

DF DG

DX EF EH EW FE FF FG FH FJ FK FN G GA GC H HA HB

180 14.81 12.00 0.81 15.00 17.25 20.75 1.50 3.28 18.00 23.75 0.63 2 3.28 1.88 10.00 10.00 2 31.13 7 15.56 39.00 17.81 26.63200 16.19 13.13 0.81 17.00 18.75 22.50 1.50 3.66 19.50 26.00 0.63 2 3.97 2.44 10.00 10.00 2 33.50 7 16.75 41.13 19.50 29.13220 17.94 14.56 0.81 18.50 20.75 24.75 1.50 4.16 21.75 29.25 0.63 2 4.84 3.16 10.00 10.00 2 36.00 7 18.00 44.13 21.63 32.19240 19.69 16.00 0.81 20.25 22.50 27.00 1.50 4.66 24.00 32.25 0.63 2 5.72 3.88 10.00 10.00 2 38.38 7 19.19 46.50 23.69 35.25270 21.75 17.63 0.81 22.50 25.00 31.25 1.50 5.28 26.25 35.69 0.63 2 4.25 4.69 10.00 15.00 3 42.75 7 21.38 49.38 26.13 38.81300 23.94 19.38 0.81 24.75 27.50 34.00 1.50 5.81 29.00 39.31 0.63 3 5.34 3.06 15.00 15.00 3 47.25 7 23.63 52.38 28.75 42.63330 26.38 21.38 0.81 27.00 30.00 37.50 2.00 6.41 32.00 43.44 0.88 3 4.31 4.31 15.00 20.00 4 50.75 7 25.38 55.38 31.75 47.31

FAN SIZE

HC HD HE HF HG HH J K KA KB KLKS

L M MA MF P QSD

SECL 18 CL 24 CL 18 CL 24

180 19.94 16.31 15.50 14.63 13.81 12.94 10.19 7.63 3.38 2.00 6.00 0.50 x 0.25 0.50 x 0.25 8.50 14.19 8.50 — 37.00 11.06 2.19 2.19 7.00200 21.75 17.88 16.94 16.00 15.13 14.19 10.75 8.19 3.38 2.00 6.50 0.50 x 0.25 0.63 x 0.31 9.00 15.38 9.50 — 39.06 12.19 2.19 2.44 7.50220 23.94 19.81 18.81 17.75 16.75 15.75 11.50 8.94 4.38 2.00 7.00 0.50 x 0.25 0.63 x 0.31 9.25 16.63 11.00 — 41.81 13.50 2.19 2.44 8.00240 26.19 21.81 20.69 19.56 18.44 17.31 12.19 9.63 4.38 2.00 7.00 0.50 x 0.25 0.63 x 0.31 9.75 17.81 12.00 — 43.50 14.88 2.19 2.69 8.00270 28.75 24.06 22.81 21.63 20.31 19.13 13.00 10.44 5.13 2.00 7.50 0.63 x 0.31 0.63 x 0.31 10.00 20.00 14.00 6.50 45.81 16.38 2.44 2.69 8.25300 31.56 26.56 25.19 23.81 22.44 21.13 13.88 11.31 6.38 2.00 8.00 0.63 x 0.31 0.75 x 0.38 10.00 22.25 14.50 7.38 48.44 18.13 2.69 2.94 8.75330 35.13 29.31 27.81 26.31 24.81 23.31 14.88 12.31 7.38 2.00 8.25 0.63 x 0.31 0.75 x 0.38 10.00 24.00 15.00 8.00 50.69 19.94 2.69 2.94 9.00

BC9987D

Arrangement 1, SWSI

DIMENSIONAL DATA

TWIN CITY FAN - CATALOG 95014

DIMENSIONS ARE NOT TO BE USED FOR CONSTRUCTION. CERTIFIED DRAWINGS AVAILABLE UPON REQUEST.

FAN SIZE A B BH DB

DCDD DE

DF DG DX EF EH EW FE FF FG FH FJ FK FN G

SDGC H HA HB

CL 18 CL 24360 29.19 23.63 1.06 29.00 33.00 41.50 2.00 6.97 35.75 48.25 0.88 4 3.22 2.94 20.00 25.00 5 57.00 7 0.25 28.50 60.63 35.13 52.25400 32.19 26.00 1.06 32.00 36.25 46.00 2.50 7.72 40.00 53.25 1.13 4 4.97 4.38 20.00 25.00 5 61.00 7 0.25 30.50 63.00 38.75 57.81450 35.50 28.75 1.06 35.00 40.00 50.50 2.50 8.56 43.75 58.88 1.13 5 4.13 3.25 25.00 30.00 6 65.00 7 0.25 32.50 68.75 42.75 63.63490 39.13 31.63 1.06 39.00 44.00 55.00 2.50 9.44 47.75 64.75 1.13 5 3.44 4.69 25.00 35.00 7 70.00 7 0.25 35.00 75.13 47.00 69.88540 43.25 35.13 1.06 42.75 48.25 59.25 2.50 10.44 52.38 71.63 1.13 6 3.00 3.94 30.00 40.00 8 76.00 7 0.25 38.00 79.63 52.00 77.13600 47.88 38.75 1.06 47.00 53.00 66.00 3.00 11.56 58.38 79.25 1.38 7 5.56 3.50 35.00 40.00 8 80.00 0.25 0.25 40.00 84.75 57.50 85.50660 52.75 42.63 1.06 51.50 57.00 72.00 3.00 12.75 63.63 87.25 1.38 7 5.50 5.44 35.00 45.00 9 85.00 0.25 0.25 42.50 89.63 63.25 93.81730 58.19 47.00 1.06 57.00 63.50 79.00 3.50 14.03 70.63 96.38 1.63 8 5.97 5.38 40.00 50.00 10 92.00 0.25 0.25 46.00 97.00 69.75 103.69800 64.38 52.00 1.06 63.00 70.00 87.00 3.50 15.63 77.50 106.63 1.63 9 6.56 5.38 45.00 55.00 11 97.00 0.25 0.25 48.50 106.00 77.13 114.44

Arrangement 1, SWSI

FAN SIZE HC HD HE HF HG HH J K KA KB KL

KSL M MA MD MF P Q

SDSE

CL 18 CL 24 CL 18 CL 24360 38.75 32.44 30.75 29.06 27.38 25.69 17.00 13.81 7.00 4.00 8.25 0.75 x 0.38 0.88 x 0.44 10.00 26.50 16.00 23.00 6.50 53.81 22.19 2.94 3.44 9.00400 43.00 35.75 33.94 32.06 30.25 28.38 18.19 15.00 6.00 3.00 9.00 0.88 x 0.44 1.00 x 0.50 11.00 28.50 18.00 25.00 7.50 56.00 24.44 3.44 3.94 10.00450 47.25 39.50 37.50 35.44 33.44 31.38 19.56 16.38 6.88 3.88 9.00 0.88 x 0.44 1.00 x 0.50 11.63 30.50 20.00 25.00 8.50 60.38 27.00 3.44 3.94 10.00490 51.81 43.50 41.25 39.00 36.75 34.50 21.06 17.81 6.75 4.75 10.00 1.00 x 0.50 1.00 x 0.50 13.00 33.00 22.00 27.50 9.50 66.31 29.75 3.94 4.44 11.00540 57.06 48.19 45.69 43.19 40.69 38.19 23.81 19.56 5.88 5.63 10.00 1.00 x 0.50 1.00 x 0.50 13.00 35.00 24.00 29.50 10.50 68.06 32.94 3.94 4.44 11.00600 63.38 53.25 50.50 47.75 45.00 42.25 25.63 21.38 6.13 5.38 10.75 1.00 x 0.50 1.25 x 0.63 13.75 37.00 26.00 31.50 11.50 72.13 36.44 4.44 4.94 11.75660 69.44 58.63 55.63 52.56 49.56 46.50 27.56 23.31 6.88 5.13 11.00 1.00 x 0.50 1.25 x 0.63 14.00 39.50 28.00 34.00 12.50 75.31 40.06 4.44 4.94 12.00730 76.88 64.38 61.38 58.06 54.69 51.38 30.81 25.50 6.50 5.50 11.00 1.00 x 0.50 1.25 x 0.63 15.00 42.00 30.00 36.50 13.50 79.50 44.31 4.44 4.94 12.00800 84.69 71.56 67.88 64.19 60.50 56.81 33.31 28.00 8.00 6.00 11.75 1.25 x 0.63 1.25 x 0.63 16.00 44.50 32.00 39.00 14.50 86.75 49.00 4.94 5.44 12.75

BC9986GNOTES:1. CW rotation shown, CCW rotation is similar but opposite.2. Size 800 will be supplied with channel subbase to be mounted on concrete pedestal in the field.3. Standard accessories: bolted access door, housing drain, pie split housing, shaft seal, punched inlet & outlet flanges.

DIMENSIONAL DATA

WWW.TCF.COM 15

Fans shall be Model RTF Radial Tip Fans as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota.

PERFORMANCE — Performance ratings shall conform to AMCA Standard 205 (fan efficiency grade) and 211 (air performance). Fans shall be tested in accordance with ANSI/AMCA Standard 210 (air performance) and 300 (sound performance) in an AMCA accredited laboratory. Fans shall be licensed to bear the AMCA certified ratings seal for air and fan efficiency grade (FEG).

HOUSING — Housings shall be made of heavy-gauge steel with continuously welded construction and braced with structural shapes to eliminate any resonant vibration and to provide smooth operation. Size 360 and larger housings shall have a pie-shaped split for easy wheel and shaft removal without disturbing inlet and outlet ductwork. The housing split must be fully gasketed and bolted together to prevent any leaks. Flanged inlet and outlet, inspection door, shaft seal and drain shall be provided as standard equipment. Bearing support members shall be fabricated of heavy steel shapes or made of concrete to insure maximum rigidity.

WHEEL — Blade design shall be curved forward at the entering edge to meet air at the correct angle of entry for high efficiency and radial at the tip of the leaving edge to provide a self-cleaning characteristic. Blades shall be formed from high strength low alloy material for strength and accuracy of contour and continuously welded to the inlet shroud and backplate. A heavy fabricated steel hub shall be provided. Wheels shall be shrunk fit on the shafts and hubs must include puller holes for use in event of wheel removal. All wheels shall be statically and dynamically balanced on precision electronic machines, as well as trim balanced during the factory test run.

SHAFT — Shafts shall be AISI 1040 or 1045 hot rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least 1.43 times the maximum speed.

BEARINGS — Fans shall be supplied with heavy duty, self-aligning, grease lubricated, anti-friction, pillow block type bearings selected for a minimum average bearing life (AFBMA L-50) in excess of 200,000 hours at the maximum fan RPM. Bearings may be ball or roller with non-split pillow block or spherical roller bearings with split pillow block hous-ing (bearing races not split). Where required, sleeve bearings may be used with appropriate cooling method for high carrying loads.

DRIVE — Motor sheaves shall be cast iron, variable pitch on applications 20 HP and smaller, and fixed pitch on 25 HP and larger. Drives and belts shall be located external to the fan casing and rated for 150% of the required motor HP.

FINISH AND COATING — The entire fan assembly, excluding the shaft, shall be thoroughly degreased and deburred before application of a rust-preventative primer. After the fan is completely assembled, a finish coat of paint shall be applied to the entire assembly. The fan shaft shall be coated with a petroleum-based rust protectant. Aluminum com-ponents shall be unpainted.

ACCESSORIES — When specified, accessories shall be provided by Twin City Fan & Blower to maintain one source responsibility.

FACTORY RUN TEST — All fans prior to shipment shall be completely assembled and test run as a unit at the speci-fied operating speed or maximum RPM allowed for the particular construction type. Each wheel shall be statically and dynamically balanced in accordance with ANSI/AMCA 204-96 "Balance Quality and Vibration Levels for Fans" to Fan Application Category BV-3, Balance Quality Grade G6.3. Balance readings shall be taken by electronic type equipment in the axial, vertical, and horizontal directions on each of the bearings. Records shall be maintained and a written copy shall be available upon request.

GUARANTEE — The manufacturer shall guarantee the workmanship and materials for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first.

Model RTF

TYPICAL SPECIFICATIONS

TWIN CITY FAN & BLOWERWWW.TCF.COM

5959 TRENTON LANE N | MINNEAPOLIS, MN 55442 | PHONE: 763-551-7600 | FAX: 763-551-7601

CENTRIFUGAL FANS | UTILITY SETS | PLENUM & PLUG FANS | INLINE CENTRIFUGAL FANS

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INDUSTRIAL PROCESS ANDCOMMERCIAL VENTILATION SYSTEMS

©2018 Twin City Fan Companies, Ltd., Minneapolis, MN. All rights reserved. Catalog illustrations cover the general appearance of Twin City

Fan & Blower products at the time of publication and we reserve the right to make changes in design and construction at any time without notice.

Twin City Fan

Twin City Fan